PARAMAGNETIC MEISSNER EFFECT IN HTSC

被引：12
|
作者：
KNAUF, N
BRAUNISCH, W
BAUER, G
KOCK, A
BECKER, A
FREITAG, B
KATAEV, V
RODEN, B
机构：
[1] UNIV COLOGNE,INST PHYS 2,W-5000 COLOGNE 41,GERMANY
[2] RUSSIAN ACAD SCI,LEBEDEV PHYS INST,MOSCOW,RUSSIA
来源：
PHYSICA B | 1994年 / 194卷
关键词：
D O I：
10.1016/0921-4526(94)91614-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
For certain polycrystalline Bi-HTSC samples, a surprising feature was observed: instead of the usual diamagnetic response of the dc field-cooling (FC) signal, a paramagnetic moment develops below T(C) for fields < 1 Oe. This effect correlates with an anomaly in the low-field microwave absorption. The data are consistent with spontaneous paramagnetic moments due to spontaneous orbital supercurrents. Such currents may originate in so called pi-contacts in the weak link network of polycrystalline material.
引用
收藏
页码：2229 / 2230
页数：2
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